9. Rolex Sea-Dweller Double Red Ref. 1665

Rolex

While the new Rolex Sea-Dweller is probably used for desk diving, like the Rolex Submariner, many of the Sea-Dwellers from the '60s and '70s have been used for the purpose they’ve been created, namely, diving. In those days, the Rolex Sea-Dweller, reference 1665 and nicknamed Double Red, was a popular watch among divers. However, after a few years of “service” and taking some of the beating that goes with the job, good examples of the Sea-Dweller from that era are quite rare. These days they are being auctioned for 20,000 GBP (about $31,000 USD) and more — sometimes much more. So the remaining Sea-Dweller Double Red Ref. 1665 will most likely never come close to the sea anymore.